Spatio-temporal analysis of rainfall patterns and their climatic implications in Mahanadi basin of Chhattisgarh, India

Abstract

The present investigation entitled “Trend analysis of rainfall for different districts of Chhattisgarh state.” was conducted at Institute Of Water Management, Bhubaneswar, Odisha, during 2019-2020. The district-wise long term weather data (1981-2018) was collected from Department of Agrometeorology, IGKV, Raipur. To fullfill the objectives of present investigation long term daily data (from 1981-2018) was used, which was averaged on monthly, annual and seasonal method of Ms-Excel. The 10 parental districts were selected for study i.e. Bilaspur, Korba, Mahasamund, Kabirdham, Dhamtari, Raigarh, Janjgir-Champa, Rajnandgaon, Raipur, Durg. Based on trend analysis it was reported that Dantewada and Mahasamund districts recorded significant increasing trend of rainfall at the rate of 8.3mm and 8.9mm per year respectively whereas, the districts Korba, Jashpur-Nagar and Kabirdham showed significant decreasing trend of rainfall at the rate of 8.3mm, 16.3mm and1.9mm per year.